React FileUploader - Overview

The FileUploader UI component enables an end user to upload files to the server. An end user can select files in the file explorer or drag and drop files on the page's FileUploader area.

View Demo

The following code adds the FileUploader to your page. Use the accept property to restrict the file types that can be uploaded to the server. This property is like the underlying <input> element's "accept" attribute and accepts the same values described here.

<div id="fileUploaderContainer"></div>

$(function() {
    $("#fileUploaderContainer").dxFileUploader({
        // ...
        accept: "image/*"
    });
});

<dx-file-uploader ...
    accept="image/*">
</dx-file-uploader>

import { DxFileUploaderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileUploaderModule
    ],
    // ...
})

<template>
    <DxFileUploader
        accept="image/*" >   
    </DxFileUploader>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileUploader
    } from 'devextreme-vue/file-uploader';

    export default {
        components: {
            DxFileUploader
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileUploader from 'devextreme-react/file-uploader';

class App extends React.Component {
    render() {
        return (
            <FileUploader accept="image/*" >
            </FileUploader>
        );
    }
}
export default App;

@(Html.DevExtreme().FileUploader()
    .Accept("image/*")
    // ...
)

@(Html.DevExtreme().FileUploader()
    .Accept("image/*")
    // ...
)

A user is allowed to upload only one file at a time by default. Set the multiple property to true to allow uploading several files at once.

$(function() {
    $("#fileUploaderContainer").dxFileUploader({
        multiple: true
    });
});

<dx-file-uploader ...
    [multiple]="true">
</dx-file-uploader>

import { DxFileUploaderModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFileUploaderModule
    ],
    // ...
})

<template>
    <DxFileUploader
        :multiple="true" >   
    </DxFileUploader>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';    

    import {
        DxFileUploader
    } from 'devextreme-vue/file-uploader';

    export default {
        components: {
            DxFileUploader
        },
        data() {
            return {
                // ...
            };
        }            
    };
</script>

import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import FileUploader from 'devextreme-react/file-uploader';

class App extends React.Component {
    render() {
        return (
            <FileUploader multiple={true} >
            </FileUploader>
        );
    }
}
export default App;

@(Html.DevExtreme().FileUploader()
    .Multiple(true)
    // ...
)

@(Html.DevExtreme().FileUploader()
    .Multiple(true)
    // ...
)

If you need to access the selected files at runtime, get the value of the value property using the following command. It returns an array, whose members are each an instance implementing the File interface.

var files = $("#fileUploaderContainer").dxFileUploader("option", "value");

With Angular, AngularJS, or Knockout, use a different technique. Bind the value property of the FileUploader UI component to a component property (in Angular), a scope property (in AngularJS), or an observable variable (in Knockout). After that, you can access the file array within any method.

• Angular

  import { DxFileUploaderModule } from "devextreme-angular"; // ... export class AppComponent { // ... value: any[] = []; getSelectedFiles () { return this.value; } } @NgModule({ imports: [ // ... DxFileUploaderModule ], // ... })

• AngularJS

  angular.module('DemoApp', ['dx']) .controller('DemoController', function DemoController($scope) { $scope.value = []; $scope.getSelectedFiles = function () { return $scope.value; } });

• Knockout

  var viewModel = { value: ko.observableArray(), getSelectedFiles: function () { return viewModel.value(); } };

  ko.applyBindings(viewModel);

The FileUploader can operate in two different modes, each demanding a different client- and server-side configuration. See the Client-Side Settings article for more details.

See Also

• Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout
• Upload Files - Server Side: ASP.NET | PHP
• File Validation
• FileUploader API Reference